Process and apparatus for preparing and cutting veneers.



PATENTED MAR. 6, 1906.

G. S. MAYHEW. PROCESS AND APPARATUS FOR PREPARING AND CUTTING VENEERS.

APPLIGATION FILED JULY 11. 1905.

Wii/mm 31mm QW UNITED STATES PATENT oEEIoE.

GEORGE SKAATS MAYHEW, OF LONDON, ENGLAND, ASSIGNOR TO GEORGE WILLIAM MELLOR, OF LONDON, ENGLAND.

PROCESS AND APPARATUS FOR PREPARING AND CUTTING VENEERS.

Specification'of Letters Patent.

Patented March 6, 1906.

Application filed July 11, 1905. Serial No. 269,174.

veneers cut in a continuous sheet from a log.

Heretofore in cutting such veneers the log has either been taken when green or if dry or partly dry has been boiled or steamed. The veneers cut off are then passed through the squeezing-rolls to extract the water, then cut in. sheets of the size required, and then dried by being piled one on the other with strips of wood between them to allow of the circulation of air to dry them, or passed between hot rollers or on carriers through a hot-air chamber to extract the moisture.

In these methods there is a large proportion of waste, as the unsupported veneers are split or broken and become so warped and twisted as to be extremely difficult of application to large surfaces which it is desired to cover.

Hitherto the logs which have been faced with a backing previously to shaving off the veneer have not had their faces dried previously to cementing on the paper or like facing, with the result that the faced veneer thus cut warped and twisted and was not satisfactory.

According to the present invention I first dry the face of the log and line it as it rotates with .a continuous sheet of tough paper or fabric, which is cemented firmly to the face of the wood, and then shave off the veneer and the paper together, and pass the faced veneer so formed over drying-rollers, and finally wind it into a roll from which it may be applied to the surface to be veneered, either in a continuous sheet or cut into Various sizes, as may be required.

My invention is more particularly described with reference to the accompanying drawing.

To carry out my invention, I mount a boiled or steamed green log 1 in suitable adjustable bearings 2, shown partly in dotted lines. speed to allow of a veneer being shaved off it by means of an adjustable knife 3. Immediately below said knife I arrange a heated rotating roller 5, mounted on suitable bearings 6, sliding in guides 7 and each controlled by a spring 8, which is adapted to keep said roller always against the face of the log as the latter becomes gradually reduced in diameter. The heat of this roller dries the outermost surface of the log as it revolves. Following this roller at a sufficient distance to allow'of a similar adjustment I arrange another roller 10, revolving in an opposite direction to that in which the log revolves and adapted to press a continuous sheet of paper 11, which has been pasted on its inner surface with a quicksetting cementing material adapted to oin the sheet of paper to the face of the log as it travels.

The paper may be fed from a roll 16, suitably supported on standards 17, the web of paper 11 passing about guide-rolls to the roll 10, and the paste, cement, or other adhesive may be applied to the web or continuous sheet of paper by a rotating brush 19, running in contact with a feed-roll 20, rotating in the trough 21, containing the paste or other adhesive material.

As will be easily understood from the drawing, the roller 10 presses this sheet of paper firmly against the face of the log. Following this roller 10 and similarly adjusted I arrange other heated pressure-rollers 12 and 13, mounted in guides 7 and controlled by springs 8, and which rollers press and dry the cemented sheet upon the face of the log, so that by the time the faced surface of the log reaches the point where the blade 3 shaves 03 the veneer and the paper cemented on it from the face of the log the paper and veneer are firmly cemented together. The faced veneer thus shaved off is passed over dryingrollers 14, which extract the remainder of the moisture left in the veneer. The sheet of paper-lined veneer is then rolled on a reel 15, from which it may afterward be unwound in a continuous sheet or cut into various sizes, as may be desired.

The hot roller 5 dries the outer surface of the log, but not to a depth as great as the thickness of the veneer being cut, and to this dried outer surface the web of cemented paper The said log 1 is driven at a suitable 11 will adhere better than it would if the surface were wet, and this partial drying of the veneer stock serves to lessen the tendency of the veneer to warp when the paper is applied thereto.

By this method of cutting and facing veneer all waste by splitting or buckling is avoided and the veneers may be applied to the surface desired, which can be done more readily than such veneers as are out without a paper backing or with a paper backing which has been applied to the face of the log before said face has been dried.

What I claim is- 1. In a machine for the manufacture of faced veneers in continuous sheets, the combination with means for supporting a revolving log, of a rotating heated roller adapted to dry the face of the log, means for applying an adhesive to a continuous sheet or web of lining material, as paper or the like, means for pressing the continuous sheet of cemented paper or the like on the dried face of the log as the latter rotates, means for pressing and drying the cemented sheet of paper or the like upon the face of the log, and means for shaving off apaper-faced veneer from the log.

2. In a machine for the manufacture of faced veneers in continuous sheets, the combination with means for supporting a revolving log, of a rotating heated roller adapted to dry the face of the log, means for applying an adhesive to a continuous sheet-or web of lining material, as paper or the like, a facingroller adapted to press the continuous sheet of cemented paper or the like on the dried face of the log as the latter rotates, means for pressing and drying the cemented sheet of paper or the like upon the face of the log, and means for shaving off a paper-faced veneer from the log.

3. In a machine for the manufacture of faced veneers in continuous sheets, the combination with means for supporting a revolving log, of a rotating heated roller adapted to dry the face of the log, means for applying an adhesive to a continuous sheet or web of lining material, as paper or the like, a facingroller adapted to press a continuous sheet of cemented paper or the like on the dried face of the log as the latter rotates, heated rollers adapted to press and dry the cemented sheet of paper or the likeupon the face of the log,

and means for shaving off a paper-faced veneer from the log.

4. In a machine for the manufacture of faced veneers in continuous sheets, the combination with means for supporting a revolving log, means for applying an adhesive to a web or continuous sheet of liningor facing material, as paper or the like, of a rotating heated roller adapted to dry the face of the log, a facing-roller adapted to press the continuous sheet of cemented paper or the like on the dried face of the log as the latter rotates, heated rollers adapted to press and dry the cemented sheet of paper or the like upon the face of the log, and an adjustable knife adapted to shave off a paper-faced veneer from the log.

5. In a machine for the manufacture of faced veneers in continuous sheets, the combination with means for supporting a revolving log, of a rotating automatically-adjustable heated roller adapted to dry the face of the log, means for applying an adhesive to a continuous sheet or web of paper or the like, an automatically-adjustable facing-roller adapted to press the continuous sheet of cemented paper or the like on the dried face of the log as the latter rotates, automatically-adjustable heated rollers adapted to press and dry the cemented sheet of paper or the like upon the face of the log, an adjustable knife adapted to shave off a paper-faced veneer from the log, and a series of drying-rollers adapted to extract the remainder of moisture from the veneer as it passes over them from the log to the reel,

6. A rocess of manufacturing veneers faced wit paper or the like cut in a continuous sheet from a rotating boiled, steamed or green log, consisting in first drying the face of the log as it rotates, then lining said dried face with a continuous sheet of tough paper or the like, then again drying the faced surface, and finally shaving off the dried, faced surface in the form of a thin continuous strip or veneer, substantially as described.

In witness whereof I have signed my name to this specification in the presence of two subscribing witnesses.

GEORGE SKAATS MAYHEW.

Witnesses:

LEONARD EDMUND HAYNES, GEORGE ISAAC BRIDGES. 

